1. The official Sherdog Store is back! Check it out! » Discuss it here! »
Violence/Genocide: Do not condone violence or genocide on a person or group of people. You are free to attack a person or groups ideas but you are crossing the line when calling for violence. This will be heavily enforced in threads with breaking news involving victims.

Please tell me your opinion regarding this math problem

Discussion in 'The War Room' started by tardzilla, Jan 19, 2015.

  1. tardzilla Banned Banned

    Joined:
    Jul 22, 2011
    Messages:
    4,256
    Likes Received:
    0
    Location:
    El Paso, TX
  2. tardzilla Banned Banned

    Joined:
    Jul 22, 2011
    Messages:
    4,256
    Likes Received:
    0
    Location:
    El Paso, TX
    Here is a response that was extremely well-received on another website:

     
  3. 7437 Banned Banned

    Joined:
    Jun 29, 2013
    Messages:
    25,430
    Likes Received:
    150
    i dunno how much opinion someone can really have on math. its.... math.
     
  4. oddjob Brown Belt Platinum Member

    Joined:
    Mar 1, 2008
    Messages:
    4,470
    Likes Received:
    434
    Location:
    Rogue Island
    just a different style.
     
  5. spin Gold Belt

    Joined:
    Jun 14, 2008
    Messages:
    17,644
    Likes Received:
    0
    That guy can go "fuck" himself
     
  6. squeezewax Black Belt

    Joined:
    Jul 28, 2013
    Messages:
    6,441
    Likes Received:
    694
    Location:
    australia
    'S', it's maths, there is an 'S' in the word mathematics.
     
  7. Halge Silver Belt

    Joined:
    Mar 7, 2009
    Messages:
    11,914
    Likes Received:
    726
    Location:
    Driving my car down to Geneva
    So, like, you make ten by adding two from the five, and then throw the remaining three away?
     
  8. tardzilla Banned Banned

    Joined:
    Jul 22, 2011
    Messages:
    4,256
    Likes Received:
    0
    Location:
    El Paso, TX
    This approach to math is from Common Core, a federally standardized educational curriculum instituted by the Federal Government. Some states have rejected the funding (and Federal oversight), but most accepted the funding and resulting oversight.
     
  9. jmag Brown Belt

    Joined:
    May 10, 2008
    Messages:
    4,051
    Likes Received:
    245
    The kid is right. The teacher is wrong.
     
  10. djacobox372 Gold Belt

    Joined:
    Apr 27, 2006
    Messages:
    23,942
    Likes Received:
    1,984
    Strange that they're teaching this "make 10" strategy. When I was a kid that's something I came up with on my own and my teachers told me it was wrong, that I should solve math in as few of steps as possible... "making 10" is a wasted step that slows you down.

    I guess I was right and they were wrong.
     
  11. tardzilla Banned Banned

    Joined:
    Jul 22, 2011
    Messages:
    4,256
    Likes Received:
    0
    Location:
    El Paso, TX
    Another quote in defense of the teacher:


    A bunch of Euros agreed with him, and it was a highly rated comment.
     
  12. Kadafi ™️️

    Joined:
    Oct 19, 2006
    Messages:
    20,151
    Likes Received:
    1,119
    Location:
    California
    Bahahahahahaha
     
  13. Anung Un Rama Idol of Millions Platinum Member

    Joined:
    Oct 16, 2009
    Messages:
    75,023
    Likes Received:
    5,776
    Location:
    Osgiliath
    This is how I do math in my head, but you can't defend a terribly worded math question. The very verbiage of this line of math is silly.

    Can anybody provide an real life example of how somebody following this line of math is superior to old school math?
     
  14. Lord_Impaler Brown Belt

    Joined:
    Dec 21, 2006
    Messages:
    3,463
    Likes Received:
    724
    I would have to hear someone explain the benefit of this.

    At first glance, they just seem to be adding superfluous steps.
     
  15. NelmarksGhost Brown Belt

    Joined:
    Aug 4, 2012
    Messages:
    4,147
    Likes Received:
    0
    I have a degree in math, and remember coming across this joke in my undergrad years.

    How a math problem changed its look ...

    Variation #1:


    Up to the 1960's

    A peasant sells a bag of potatoes for $10.
    His costs amount to 4/5 of his selling price.
    What is his profit?

    In the early 1970's

    A farmer sells a bag of potatoes for $10.
    His costs amount to 4/5 of his selling price, i.e., $8.
    What is his profit?

    1970's (new math)

    A farmer exchanges a set P of potatoes with a set M of money.
    The cardinality of the set M is equal to $10 and each element of M is worth $1.
    Draw 10 big dots representing the elements of M.
    The set of production cost is comprised of 2 big dots less then the set M.
    Represent C as a subset of M and give the answer to the question:
    What is the cardinality of the set of profits?

    1980's

    A farmer sells a bag of potatoes for $10.
    His production costs are $8 and his profit is $2.
    Underline, the word "potatoes" and discuss with your classmates.

    1990's

    A farmer sells a bag of potatoes for $10.00.
    His production costs are 0.80 of his revenue.
    On your calculator graph revenue versus costs.
    Run the "POTATO" program on your computer to determine the profit.
    Discuss the result with the other students in your group.
    Write a brief essay that analyzes how this example relates to the real world of economics.

    I think this illustrates well that math education is not fixed in time. Everyone seems to think the way they learned it is the right way, and everything else is crazy. Though some approaches have shown themselves to be particularly bad ideas. Mass education is garbage in general.
     
  16. Crono7 GET TO THE CHOPPA

    Joined:
    Mar 24, 2007
    Messages:
    11,403
    Likes Received:
    215
    I did the same as well

    I dont see why this is taught though,

    seems like a lot of effort just to teach kids single digit addition, which IMO should be memorized.
     
  17. drstrangelov Hey.

    Joined:
    Oct 15, 2005
    Messages:
    18,794
    Likes Received:
    2,223
    Same. In theory it should teach kids a little more process and a little less rote memorization. But, if you're concurrently teaching the kids grammar and writing, they should be praised for noting the flaws in the way the question is written.
     
  18. Anung Un Rama Idol of Millions Platinum Member

    Joined:
    Oct 16, 2009
    Messages:
    75,023
    Likes Received:
    5,776
    Location:
    Osgiliath
    No, they're saying because 8+5 is so difficult make a 10 out of the numbers to make it easier to finish the equation.

    8+2=10+3=13
     
  19. Like A Bas Brown Belt

    Joined:
    Apr 24, 2014
    Messages:
    3,218
    Likes Received:
    0
    There is more than one way to approach math. I don't care how it's done as long as it gets results, but it should be flexible enough to allow different students to use different methods. And in before somebody blames Obama for this.
     
  20. TheyAreSurfers Let Me Get One Wave

    Joined:
    Sep 1, 2014
    Messages:
    1,242
    Likes Received:
    0
    Poorly worded question. If you're adding 8 + 5 the final product has no way of being 10. "Make a 10".... "make more specific questions".
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.